The principle of rational irrigation of rice is: deep water returning to green, shallow moisture, sturdy water, strong and dry seeds.
Deep water returns to green. After transplanting rice, the root system is greatly damaged, and the ability to absorb water is greatly weakened. If the field lacks water, the water absorbed by the rice root will be less, and the leaves will lose more water, resulting in insufficient production. Lightly, the greening period is prolonged, and the weight is reduced. Therefore, after transplanting, the seedlings must be reclaimed in deep water to prevent physiological loss of water, so as to return to green early and reduce dead seedlings. However, deep water rejuvenation is not as deep as possible, generally 3 to 5 cm.
Shallow moisture. If the rice is too deep in the tillering stage, the soil is deprived of oxygen and gas, the nutrient decomposition is slow, and the light at the base of the rice plant is weak, which is unfavorable for tillering. However, there should be no water layer during the tillering period. Generally, a shallow water layer of 1.5 cm depth should be filled, and the “post-water can not be seen before the water†should be used to coordinate the contradiction between water, fertilizer and heat in the soil.
There is water and strong. The period of rice ear formation is the most demanding stage of rice in the whole life, especially in the meiosis stage, which is more sensitive to the response of water. At this time, if water is scarce, the spikelets will be degraded, resulting in short spikes, few grains, and more shells. Therefore, during the period from the straw to the heading, it is necessary to maintain a water layer of about 3 cm in the field to ensure the growth of the flowers.
Dry and wet seeds. After rice heading and flowering, the leaves stop growing, the stems and leaves no longer elongate, the floret development is completed, and the water requirement of the seedlings is reduced. In order to strengthen the field ventilation, reduce the occurrence of diseases, improve the vitality of the root system, prevent the premature senescence of the leaves, and promote the robustness of the stalks, the method of pipe drying should be adopted: dry and wet, wet and water-based, to achieve water regulation, gas cultivation, Root preservation leaves, the purpose of leaves strong seeds.
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Walking aids is an auxiliary device to assist the human body to support weight, maintain balance and walk. It can also be called walking aids, walking stands or walking aids. Among walking aids, walking aids can provide the greatest support and stability. Therefore, it is mainly used for patients with weak strength and poor balance, such as the elderly after orthopedic surgery, patients with poor coordination and Parkinson's disease, and children with cerebral palsy or developmental retardation. With the support of equipment, people with less flexible legs can walk and take care of themselves.
According to the structure and function of Walker, it can be divided into two categories: stick walker and frame walker. The walking aid is simple and light in structure, but its supporting area is small and its stability is poor; The frame walker has a complex structure, but it has a large supporting area and good stability.
Before using the walker, the user's physical condition and use environment should be comprehensively evaluated, including balance ability, lower limb bearing ability, gait, upper limb ability, cognitive ability, lifestyle and use environment.
Select a walker
1. The texture should be light and easy for patients to move.
2. The walker should be placed stably on the ground;
3. The height of the walker should be suitable or adjustable. When the patient stands in the walker and his hands are naturally sagging, he can hold the handrails on both sides and apply pressure on the handrails to ensure the support of weight and balance control;
4. The width of the walker should be moderate, not too wide.
TRUTECH CO., LTD. is an enterprise specializing in the research, development, production and sales of professional OTC products.The main products include shower chairs, armrests, toilet racks and toilet armrests, bedside armrests, elderly chairs and sofas, crutches and walking aids, knee pads, waist supports and other equipment.
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